Actuator



FIG. 1 is a top, front and left side perspective view of an actuator showing my new design;

FIG. 2 is a top, rear and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the actuator which form no part of the claimed design. 

CLAIM The ornamental design for an actuator, as shown and described. 